SYNOPTIC TABLE OF THE RANdE OF THE QRAPTOLITE O.ENERA OF THE UNITED STATES' 



a 



Callograptas 

 Ptilograptus 

 Dictyonema 

 Odontocaulis 

 Ptiograptus 

 Desmograptus 

 Dendrograptus 

 Cyclograptus 

 Inocaulis 

 Acanthograptus 

 Palaeodictyota 

 Thamnograptus 

 Mastigograptus 

 Chaunograptus 

 Strophograptus 

 Corynoides 

 'Bryograptus 

 Staurograptus 

 Temnograptus 

 Goniograptus 

 Loganograptus 

 Dichograptus 

 Tetragraptus 

 Phyllograptus 

 Didymograptus 

 Azygograptus 

 Leptograptus 

 Sigmagraptus 

 Syndyograptus 

 Pleurograptus 

 Amphigraptus 

 Nemagraptus 

 Dicellograptus 

 .Dicranograptus 

 Diplograptus 

 Glossograptus 

 Trigonograptus 

 Climacograptus 

 Cryptograptus 

 Monograptus 

 Cyrtograptus 

 Retiograptus 

 Retiolites 

 5 lLasiograptus 



.1 more detailed table of the range of the genera of the Cambric and Lower Champ.ainic is found in Me; 



7, page 508. A dotted line signifies a discontinuous range. 



